Mini-Quiz: Center of Mass and Tangential Gravitational Motion

by Ron Kurtus

Take this Mini-Quiz to check your understanding of the lesson material.

1. What is the ratio of tangential speeds with respect to the CM?

It is sTM/sTm = M/m

It is vTm/vTM = M/m

It is sTm/sTM = M/m

2. What happens when you slightly increase the tangential velocity of a circular orbit?

The orbit becomes elliptical

The object will fly off into space in a radial direction

It becomes a larger circle

It negates the tangential motion

It can cause the object to move in a path toward or away from the CM

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

Move in the right direction

Resources and references

Ron Kurtus' Credentials

Websites

Center of Mass Calculator - Univ. of Tennessee - Knoxville (Java applet)

Center of Mass - Wikipedia

Gravitation Resources

Books

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www.school-for-champions.com/science/
mini-quiz_gravitation_center_of_mass_tangential_motion.htm

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